Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 461 insertions, 0 deletions

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
new file mode 100644
index 000000000..b28fabfc9
--- /dev/null
+++ b/arch/riscv/Kconfig
@@ -0,0 +1,461 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.rst.
+#
+
+config 64BIT
+	bool
+
+config 32BIT
+	bool
+
+config RISCV
+	def_bool y
+	select ARCH_CLOCKSOURCE_INIT
+	select ARCH_SUPPORTS_ATOMIC_RMW
+	select ARCH_HAS_BINFMT_FLAT
+	select ARCH_HAS_DEBUG_VM_PGTABLE
+	select ARCH_HAS_DEBUG_VIRTUAL if MMU
+	select ARCH_HAS_DEBUG_WX
+	select ARCH_HAS_GCOV_PROFILE_ALL
+	select ARCH_HAS_GIGANTIC_PAGE
+	select ARCH_HAS_KCOV
+	select ARCH_HAS_MMIOWB
+	select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
+	select ARCH_HAS_PTE_SPECIAL
+	select ARCH_HAS_SET_DIRECT_MAP
+	select ARCH_HAS_SET_MEMORY
+	select ARCH_HAS_STRICT_KERNEL_RWX if MMU
+	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
+	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
+	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
+	select ARCH_WANT_FRAME_POINTERS
+	select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
+	select CLONE_BACKWARDS
+	select CLINT_TIMER if !MMU
+	select COMMON_CLK
+	select EDAC_SUPPORT
+	select GENERIC_ARCH_TOPOLOGY
+	select GENERIC_ATOMIC64 if !64BIT
+	select GENERIC_CLOCKEVENTS
+	select GENERIC_EARLY_IOREMAP
+	select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
+	select GENERIC_IOREMAP
+	select GENERIC_IRQ_MULTI_HANDLER
+	select GENERIC_IRQ_SHOW
+	select GENERIC_PCI_IOMAP
+	select GENERIC_PTDUMP if MMU
+	select GENERIC_SCHED_CLOCK
+	select GENERIC_SMP_IDLE_THREAD
+	select GENERIC_STRNCPY_FROM_USER if MMU
+	select GENERIC_STRNLEN_USER if MMU
+	select GENERIC_TIME_VSYSCALL if MMU && 64BIT
+	select HANDLE_DOMAIN_IRQ
+	select HAVE_ARCH_AUDITSYSCALL
+	select HAVE_ARCH_JUMP_LABEL
+	select HAVE_ARCH_JUMP_LABEL_RELATIVE
+	select HAVE_ARCH_KASAN if MMU && 64BIT
+	select HAVE_ARCH_KGDB
+	select HAVE_ARCH_KGDB_QXFER_PKT
+	select HAVE_ARCH_MMAP_RND_BITS if MMU
+	select HAVE_ARCH_SECCOMP_FILTER
+	select HAVE_ARCH_TRACEHOOK
+	select HAVE_ASM_MODVERSIONS
+	select HAVE_CONTEXT_TRACKING
+	select HAVE_DEBUG_KMEMLEAK
+	select HAVE_DMA_CONTIGUOUS if MMU
+	select HAVE_EBPF_JIT if MMU
+	select HAVE_FUTEX_CMPXCHG if FUTEX
+	select HAVE_GCC_PLUGINS
+	select HAVE_GENERIC_VDSO if MMU && 64BIT
+	select HAVE_PCI
+	select HAVE_PERF_EVENTS
+	select HAVE_PERF_REGS
+	select HAVE_PERF_USER_STACK_DUMP
+	select HAVE_STACKPROTECTOR
+	select HAVE_SYSCALL_TRACEPOINTS
+	select IRQ_DOMAIN
+	select MODULES_USE_ELF_RELA if MODULES
+	select MODULE_SECTIONS if MODULES
+	select OF
+	select OF_EARLY_FLATTREE
+	select OF_IRQ
+	select PCI_DOMAINS_GENERIC if PCI
+	select PCI_MSI if PCI
+	select RISCV_INTC
+	select RISCV_TIMER if RISCV_SBI
+	select SPARSE_IRQ
+	select SYSCTL_EXCEPTION_TRACE
+	select THREAD_INFO_IN_TASK
+	select UACCESS_MEMCPY if !MMU
+
+config ARCH_MMAP_RND_BITS_MIN
+	default 18 if 64BIT
+	default 8
+
+# max bits determined by the following formula:
+#  VA_BITS - PAGE_SHIFT - 3
+config ARCH_MMAP_RND_BITS_MAX
+	default 24 if 64BIT # SV39 based
+	default 17
+
+# set if we run in machine mode, cleared if we run in supervisor mode
+config RISCV_M_MODE
+	bool
+	default !MMU
+
+# set if we are running in S-mode and can use SBI calls
+config RISCV_SBI
+	bool
+	depends on !RISCV_M_MODE
+	default y
+
+config MMU
+	bool "MMU-based Paged Memory Management Support"
+	default y
+	help
+	  Select if you want MMU-based virtualised addressing space
+	  support by paged memory management. If unsure, say 'Y'.
+
+config ZONE_DMA32
+	bool
+	default y if 64BIT
+
+config VA_BITS
+	int
+	default 32 if 32BIT
+	default 39 if 64BIT
+
+config PA_BITS
+	int
+	default 34 if 32BIT
+	default 56 if 64BIT
+
+config PAGE_OFFSET
+	hex
+	default 0xC0000000 if 32BIT && MAXPHYSMEM_1GB
+	default 0x80000000 if 64BIT && !MMU
+	default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB
+	default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
+
+config KASAN_SHADOW_OFFSET
+	hex
+	depends on KASAN_GENERIC
+	default 0xdfffffc800000000 if 64BIT
+	default 0xffffffff if 32BIT
+
+config ARCH_FLATMEM_ENABLE
+	def_bool y
+
+config ARCH_SPARSEMEM_ENABLE
+	def_bool y
+	depends on MMU
+	select SPARSEMEM_STATIC if 32BIT && SPARSEMEM
+	select SPARSEMEM_VMEMMAP_ENABLE if 64BIT
+
+config ARCH_SELECT_MEMORY_MODEL
+	def_bool ARCH_SPARSEMEM_ENABLE
+
+config ARCH_WANT_GENERAL_HUGETLB
+	def_bool y
+
+config ARCH_SUPPORTS_DEBUG_PAGEALLOC
+	def_bool y
+
+config SYS_SUPPORTS_HUGETLBFS
+	depends on MMU
+	def_bool y
+
+config STACKTRACE_SUPPORT
+	def_bool y
+
+config TRACE_IRQFLAGS_SUPPORT
+	def_bool y
+
+config GENERIC_BUG
+	def_bool y
+	depends on BUG
+	select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
+
+config GENERIC_BUG_RELATIVE_POINTERS
+	bool
+
+config GENERIC_CALIBRATE_DELAY
+	def_bool y
+
+config GENERIC_CSUM
+	def_bool y
+
+config GENERIC_HWEIGHT
+	def_bool y
+
+config FIX_EARLYCON_MEM
+	def_bool MMU
+
+config PGTABLE_LEVELS
+	int
+	default 3 if 64BIT
+	default 2
+
+config LOCKDEP_SUPPORT
+	def_bool y
+
+source "arch/riscv/Kconfig.socs"
+
+menu "Platform type"
+
+choice
+	prompt "Base ISA"
+	default ARCH_RV64I
+	help
+	  This selects the base ISA that this kernel will target and must match
+	  the target platform.
+
+config ARCH_RV32I
+	bool "RV32I"
+	select 32BIT
+	select GENERIC_LIB_ASHLDI3
+	select GENERIC_LIB_ASHRDI3
+	select GENERIC_LIB_LSHRDI3
+	select GENERIC_LIB_UCMPDI2
+	select MMU
+
+config ARCH_RV64I
+	bool "RV64I"
+	select 64BIT
+	select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000
+	select HAVE_DYNAMIC_FTRACE if MMU
+	select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
+	select HAVE_FTRACE_MCOUNT_RECORD
+	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_FUNCTION_TRACER
+	select SWIOTLB if MMU
+
+endchoice
+
+# We must be able to map all physical memory into the kernel, but the compiler
+# is still a bit more efficient when generating code if it's setup in a manner
+# such that it can only map 2GiB of memory.
+choice
+	prompt "Kernel Code Model"
+	default CMODEL_MEDLOW if 32BIT
+	default CMODEL_MEDANY if 64BIT
+
+	config CMODEL_MEDLOW
+		bool "medium low code model"
+	config CMODEL_MEDANY
+		bool "medium any code model"
+endchoice
+
+config MODULE_SECTIONS
+	bool
+	select HAVE_MOD_ARCH_SPECIFIC
+
+choice
+	prompt "Maximum Physical Memory"
+	default MAXPHYSMEM_1GB if 32BIT
+	default MAXPHYSMEM_2GB if 64BIT && CMODEL_MEDLOW
+	default MAXPHYSMEM_128GB if 64BIT && CMODEL_MEDANY
+
+	config MAXPHYSMEM_1GB
+		depends on 32BIT
+		bool "1GiB"
+	config MAXPHYSMEM_2GB
+		depends on 64BIT && CMODEL_MEDLOW
+		bool "2GiB"
+	config MAXPHYSMEM_128GB
+		depends on 64BIT && CMODEL_MEDANY
+		bool "128GiB"
+endchoice
+
+
+config SMP
+	bool "Symmetric Multi-Processing"
+	help
+	  This enables support for systems with more than one CPU.  If
+	  you say N here, the kernel will run on single and
+	  multiprocessor machines, but will use only one CPU of a
+	  multiprocessor machine. If you say Y here, the kernel will run
+	  on many, but not all, single processor machines. On a single
+	  processor machine, the kernel will run faster if you say N
+	  here.
+
+	  If you don't know what to do here, say N.
+
+config NR_CPUS
+	int "Maximum number of CPUs (2-32)"
+	range 2 32
+	depends on SMP
+	default "8"
+
+config HOTPLUG_CPU
+	bool "Support for hot-pluggable CPUs"
+	depends on SMP
+	select GENERIC_IRQ_MIGRATION
+	help
+
+	  Say Y here to experiment with turning CPUs off and on.  CPUs
+	  can be controlled through /sys/devices/system/cpu.
+
+	  Say N if you want to disable CPU hotplug.
+
+choice
+	prompt "CPU Tuning"
+	default TUNE_GENERIC
+
+config TUNE_GENERIC
+	bool "generic"
+
+endchoice
+
+config RISCV_ISA_C
+	bool "Emit compressed instructions when building Linux"
+	default y
+	help
+	   Adds "C" to the ISA subsets that the toolchain is allowed to emit
+	   when building Linux, which results in compressed instructions in the
+	   Linux binary.
+
+	   If you don't know what to do here, say Y.
+
+menu "supported PMU type"
+	depends on PERF_EVENTS
+
+config RISCV_BASE_PMU
+	bool "Base Performance Monitoring Unit"
+	def_bool y
+	help
+	  A base PMU that serves as a reference implementation and has limited
+	  feature of perf.  It can run on any RISC-V machines so serves as the
+	  fallback, but this option can also be disable to reduce kernel size.
+
+endmenu
+
+config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
+	def_bool y
+	# https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6dc
+	depends on AS_IS_GNU && AS_VERSION >= 23800
+	help
+	  Newer binutils versions default to ISA spec version 20191213 which
+	  moves some instructions from the I extension to the Zicsr and Zifencei
+	  extensions.
+
+config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
+	def_bool y
+	depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
+	# https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
+	depends on CC_IS_CLANG && CLANG_VERSION < 170000
+	help
+	  Certain versions of clang do not support zicsr and zifencei via -march
+	  but newer versions of binutils require it for the reasons noted in the
+	  help text of CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI. This
+	  option causes an older ISA spec compatible with these older versions
+	  of clang to be passed to GAS, which has the same result as passing zicsr
+	  and zifencei to -march.
+
+config FPU
+	bool "FPU support"
+	default y
+	help
+	  Say N here if you want to disable all floating-point related procedure
+	  in the kernel.
+
+	  If you don't know what to do here, say Y.
+
+endmenu
+
+menu "Kernel features"
+
+source "kernel/Kconfig.hz"
+
+config RISCV_SBI_V01
+	bool "SBI v0.1 support"
+	default y
+	depends on RISCV_SBI
+	help
+	  This config allows kernel to use SBI v0.1 APIs. This will be
+	  deprecated in future once legacy M-mode software are no longer in use.
+endmenu
+
+menu "Boot options"
+
+config CMDLINE
+	string "Built-in kernel command line"
+	help
+	  For most platforms, the arguments for the kernel's command line
+	  are provided at run-time, during boot. However, there are cases
+	  where either no arguments are being provided or the provided
+	  arguments are insufficient or even invalid.
+
+	  When that occurs, it is possible to define a built-in command
+	  line here and choose how the kernel should use it later on.
+
+choice
+	prompt "Built-in command line usage" if CMDLINE != ""
+	default CMDLINE_FALLBACK
+	help
+	  Choose how the kernel will handle the provided built-in command
+	  line.
+
+config CMDLINE_FALLBACK
+	bool "Use bootloader kernel arguments if available"
+	help
+	  Use the built-in command line as fallback in case we get nothing
+	  during boot. This is the default behaviour.
+
+config CMDLINE_EXTEND
+	bool "Extend bootloader kernel arguments"
+	help
+	  The command-line arguments provided during boot will be
+	  appended to the built-in command line. This is useful in
+	  cases where the provided arguments are insufficient and
+	  you don't want to or cannot modify them.
+
+
+config CMDLINE_FORCE
+	bool "Always use the default kernel command string"
+	help
+	  Always use the built-in command line, even if we get one during
+	  boot. This is useful in case you need to override the provided
+	  command line on systems where you don't have or want control
+	  over it.
+
+endchoice
+
+config EFI_STUB
+	bool
+
+config EFI
+	bool "UEFI runtime support"
+	depends on OF
+	select LIBFDT
+	select UCS2_STRING
+	select EFI_PARAMS_FROM_FDT
+	select EFI_STUB
+	select EFI_GENERIC_STUB
+	select EFI_RUNTIME_WRAPPERS
+	select RISCV_ISA_C
+	depends on MMU
+	default y
+	help
+	  This option provides support for runtime services provided
+	  by UEFI firmware (such as non-volatile variables, realtime
+	  clock, and platform reset). A UEFI stub is also provided to
+	  allow the kernel to be booted as an EFI application. This
+	  is only useful on systems that have UEFI firmware.
+
+endmenu
+
+config BUILTIN_DTB
+	def_bool n
+	depends on RISCV_M_MODE
+	depends on OF
+
+menu "Power management options"
+
+source "kernel/power/Kconfig"
+
+endmenu
+
+source "drivers/firmware/Kconfig"